According to the results, twice as many subjects with delayed sleep phase syndrome reported an irregular menstrual cycle compared to controls. For those not using birth control, three times as many subjects with delayed sleep phase syndrome reported irregular menstruation, compared to controls. Pre-menstrual problems, such as cramps and mood swings, were reported by 69 percent of those with delayed sleep phase syndrome, compared to 16.67 percent of controls.

Obstructive sleep apnea (OSA) is much more common in postmenopausal women. This increase may be due in part to menopause-related weight gain. But it also appears to be hormone-related. Estrogen seems to help protect women against OSA.

It is recommended that women get between seven and eight hours of nightly sleep.

The following tips are provided by the American Academy of Sleep Medicine (AASM) to help women get the most out of their sleep: